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HelicopterAvant RC Avant Aurora - Mostro › Avant e-Aurora 90 Dowel Pins...
06-03-2010 03:15 PM  7 years agoPost 1
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I'm sorry, but I guess I still don't get it. The build uses the dowel pins into the center of all of the gears. This makes sense. But what I don't understand is how you can ever get the main gear out of the helicopter without completely disassembling the main frames. I think that you can probably get the t/r bevel gear assembly out without separating the frames since they just sort of slide out. But it seems to me that once you put the main shaft/main gear in, you have to take the frames completely apart to get any of components out again. So how can people say, "I've had several crashes and never had to take the frames apart". Are these people not bending the main shaft in their crash? After a crash, don't you have to at least take the main shaft out to check if it is bent? You have to split the frames to do this, right?

Moreover, how the heck do you get the dowel pins out once they have been Loctited in? Forgive me, but the design of this helicopter is quite different from what I am used to, and it is taking me some time to fully understand the engineering.

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06-03-2010 03:19 PM  7 years agoPost 2
Ronald Thomas

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Gainesville, Fl, USA

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Justin as someone who just had to do it, here is what I did. I removed the bolt form the bottom of the mainshaft, stuck and "L" shaped allen in the bottom of the main shaft, loosened it, removed the pin with a small tool and a little tapping, pulled the main shaft up, removed the main gear..........Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-03-2010 03:39 PM  7 years agoPost 3
Justin Stuart (RIP)

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Plano, Texas

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How did you get to the set screw in the bottom of the main shaft? Through the top of the ESC hole? Was the pin Loctited into the main shaft? What kind of small tool did you use to get the pin out? How hard did you have to hit it to get it out? Did you have to use a heat gun or soldering iron to heat up the pin?

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06-03-2010 03:41 PM  7 years agoPost 4
merlin3

rrKey Veteran

dayton, ohio

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it's really not that hard, on my nitro one i just slide out fuel tank and use a an allen key to loosen set screw and tap out the pin, the e-aurora you just move the esc. and yes I always loctite in all the pins, it's not that hard to get them out.

Justin - Team Horizon, Team Byron
2-700x, Trex 700n, small helis

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06-03-2010 03:43 PM  7 years agoPost 5
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Through the ESC opening, with an "L" shaped allen key. Yes the screw was installed with blue loctite..........Ron

***Edit***

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-03-2010 03:43 PM  7 years agoPost 6
Justin Stuart (RIP)

rrMaster

Plano, Texas

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And to get out the tail assembly (if need be), you can just slide it out through the frames? So then really, there is no need to ever take the frames apart unless you crack one of them?

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06-03-2010 03:46 PM  7 years agoPost 7
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Correct

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06-03-2010 05:27 PM  7 years agoPost 8
QuantumPSI

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Atlanta, GA

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Based on what I'm reading, it still seems like a lot of work. Sounds to be more of an art to remove the mainshaft than a simple procedure. From what I'm gathering, it would seem that this particular area is OVER engineered.

How about this... would it be possible to put cut outs or a hole in the frames that would allow you to reach the pin and set screw without removing the ESC?

I dunno guys, just seems to be an awful lot of trouble to remove the mainshaft (or at least, moreso than it should be IMO).

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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06-03-2010 05:29 PM  7 years agoPost 9
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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I didn't have to remove the ESC at all. It really is simple. Just have to have the L shaped allen key.......Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-03-2010 05:42 PM  7 years agoPost 10
QuantumPSI

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Atlanta, GA

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Hmm, I'd like to see pictures of this assembly up close if someone could post it please.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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06-03-2010 05:50 PM  7 years agoPost 11
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Here ya go

...

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06-03-2010 05:52 PM  7 years agoPost 12
QuantumPSI

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Atlanta, GA

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Hmm, I think I'm going to just have to wait until I get my hands on this machine, cause from what I'm seeing, I don't see any reason why you can't get to the pin and set screw from the side.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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06-03-2010 07:49 PM  7 years agoPost 13
michelin

rrApprentice

Austria

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is there a second bearing over the pinion to take the motor shaft ?
in this case i think i will need a motor with a long shaft, right ?

Michael

Never touch a running system
Vibe 90 SG Vibe 50 NEX Vibe 500
Futaba T8FG OS Engines JR

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06-03-2010 07:51 PM  7 years agoPost 14
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Yes there is but no need for a long shaft. The Avant one bots on the main shaft and serves as the extension. Two bearings...one on top and one on the bottom........Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-03-2010 08:36 PM  7 years agoPost 15
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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Here is a pic for reference to the Allen Key and the removal of the grub screw.

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-03-2010 08:41 PM  7 years agoPost 16
Daniel Jetschin

rrApprentice

Germany

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Hey

The top pinion support of the pinion seats on the pinion itself, so as he said, a regular motor shaft is all you need.

There is really no need to take the frames apart for any gear change. Loosen setscrew, tap pin out, pull mainshaft, remove maingear unit. Can't be any more simple

Dan

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06-03-2010 09:18 PM  7 years agoPost 17
QuantumPSI

rrElite Veteran

Atlanta, GA

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Can't be any more simple
Ok those pictures help, but I'm willing to bet it isn't too fun to get that set screw back in

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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06-03-2010 09:27 PM  7 years agoPost 18
Justin Stuart (RIP)rrMaster - Plano, Texas - My Posts: All  Forum  Topic

I think a lot of thought went into the design of the Aurora, but the engineering is a little bit "weird" if you know what I mean. I guess I'm used to building helicopters which are designed by former engineers from the John Deere tractor factory. The Aurora is different. It is a very minimalistic design. If I didn't know better, I would think that Augusto used to work for Pininfarina. Have you ever examined the engineering on a Ferrari? Take the shifter for example. Very weird. But it works. It's just not typical. Same thing with the Aurora.

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06-04-2010 12:42 AM  7 years agoPost 19
stang281472

rrApprentice

Commack, NY

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The mainshaft set screw doesnt need to be completely removed. You just loosen it up a turn or two which is really easy as you just hold the L shaped allen in set screw and turn the head counter clockwise 2 turns and push pin out. When mainshaft is back in replace pin and put allen in set screw and turn head opposite direction until tight. VERY easy!

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06-04-2010 02:38 AM  7 years agoPost 20
Justin Stuart (RIP)

rrMaster

Plano, Texas

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Stang, your explanation sounds so simple. So then is there anything on the Aurora that is "hard" to do?

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